How Do You Spell "Capitol Hill?"

What is going on over there Capit(o/a)l Hill? All tied in one there's been some tragic misspelling of the neighborhood, an armed robbery, a lost/stolen dog, some Twitter hostility, and some debate over whether misspellers are fit dog parents. We can't make sense of it, so if you can please let us know what the deal is in the comments. [CHS]